Difference between revisions of "Coduino"
From Hackstrich
(status updates.) |
(Updating design notes.) |
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| − | The Coduino (''Co''processor for Ar''duino'' systems) | + | The Coduino (''Co''processor for Ar''duino'' systems) is 4 Arduino-compatible systems on a shield, to enable multiprocessor stacks. |
== Project Status == | == Project Status == | ||
| Line 14: | Line 14: | ||
== Specs/Brainstorming == | == Specs/Brainstorming == | ||
| − | * | + | * Uses ATMega328p for compatibility with the Duemilanove board. |
| − | |||
* Standard boot loader will be used. | * Standard boot loader will be used. | ||
* Serial only in the first revision, no USB-Serial on the board itself (FTDI cables are easy to get now). | * Serial only in the first revision, no USB-Serial on the board itself (FTDI cables are easy to get now). | ||
| − | * | + | * Communicates (optionally) with the master Arduino (bottom of the stack) via I2C (with jumpers to disconnect this), leaving all other pins available. |
| − | * Main headers | + | * Main headers just 'stack-through' the master Arduino, the I/O from the Coduino is broken out on separate headers (maybe with a 'base board' that can connect to stack shields on the Coduino via a cable?). |
| − | * Board could | + | * Board has 4 processors, could stuff half of them for a lower-cost version, though I don't think it would lower the cost that much in the end |
| − | * | + | * Each processor has a local reset button, and can also be optionally linked to a master reset using jumpers |
| + | * All 4 processors run off a single oscillator using a 4:1 fanout buffer, so they will stay synced up instruction-by-instruction | ||
[[Category:Status/Waiting for Time]] | [[Category:Status/Waiting for Time]] | ||
[[Category:Current Projects]] | [[Category:Current Projects]] | ||
[[Category:Projects]] | [[Category:Projects]] | ||
Revision as of 04:08, 27 February 2012
The Coduino (Coprocessor for Arduino systems) is 4 Arduino-compatible systems on a shield, to enable multiprocessor stacks.
Project Status
- 2012-02-24: First board assembled, runs 'blink' on all 4 CPUs successfully.
- 2012-02-22: Parts arrived.
- 2012-02-21: Ordered parts from Digikey.
- 2011-10-18: PCBs received.
- 2011-09-30: Completed routing board, added all required silkscreen, submitted to Laen for prototype manufacturing. Need to order parts now.
- 2011-09-29: Almost done routing board.
- 2011-09-26: Started routing board.
- 2011-09-25: Added master reset button and power LED. Schematic passes checklist.
- 2011-09-23: Started working on schematic, now 90% complete. Need to add a master reset button and a power LED.
- Pre-Sept 2011: Put specs and BOM together.
Specs/Brainstorming
- Uses ATMega328p for compatibility with the Duemilanove board.
- Standard boot loader will be used.
- Serial only in the first revision, no USB-Serial on the board itself (FTDI cables are easy to get now).
- Communicates (optionally) with the master Arduino (bottom of the stack) via I2C (with jumpers to disconnect this), leaving all other pins available.
- Main headers just 'stack-through' the master Arduino, the I/O from the Coduino is broken out on separate headers (maybe with a 'base board' that can connect to stack shields on the Coduino via a cable?).
- Board has 4 processors, could stuff half of them for a lower-cost version, though I don't think it would lower the cost that much in the end
- Each processor has a local reset button, and can also be optionally linked to a master reset using jumpers
- All 4 processors run off a single oscillator using a 4:1 fanout buffer, so they will stay synced up instruction-by-instruction
